CDS

V* Y Sgr

C.D.S. - SIMBAD4 rel 1.7 - 2019.12.07CET14:43:25

Available data : Basic data  •  Identifiers  •  Plot & images  •  Bibliography  •  Measurements  •  External archives  •  Notes  •  Annotations

Basic data :
V* Y Sgr -- Classical Cepheid (delta Cep type)
Origin of the objects types :

(Ref) Object type as listed in the reference "Ref"
(acronym) Object type linked to the acronym according to the original reference
() Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases

Other object types: 		cC* (), * (BD,GC,...), V* (V*,AAVSO), IR (IRAS,2MASS), UV (TD1), ** (Ref)
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
ICRS coord. (ep=J2000) : 		18 21 22.9864295 -18 51 36.001763 (Optical) [ 0.44 0.24 90 ] A 2007A&A...474..653V
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK5 coord. (ep=J2000 eq=2000) : 		18 21 22.9864295 -18 51 36.001763 [ 0.44 0.24 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
FK4 coord. (ep=B1950 eq=1950) : 		18 18 26.4588568 -18 53 02.639037 [ 0.44 0.24 90 ]
Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" :
  • ra dec : right ascension and declination (unit and frame defined according to your Output Options)
    Grey values are increasing the original precision due to the computation of frame transformations
  • (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam)
  • [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue),
    position angle (in degrees North celestial pole to East)
  • quality : flag of quality
    • E ≥ 10"
    • D : 1-10" (and some old data)
    • C : 0.1-1"
    • B : 0.01-0.1" + 2MASS, Tyc
    • A : VLBI, Hipparcos
  • bibcode : bibcode of the coordinates reference
Gal coord. (ep=J2000) : 		012.7892661224 -02.1359239216 [ 0.44 0.24 90 ]
Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode"
  • pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr)
  • pm-dec : mu-dec (expressed in the ICRS system in mas/yr)
  • [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg)
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the proper motion reference
Proper motions mas/yr : 		-3.12 -7.01 [0.45 0.28 0] A 2007A&A...474..653V
Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode"
  • value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options
    (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity)
  • [error] : error of the corresponding value displayed before
  • (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown)
  • quality : flag of quality ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the value's origin
Radial velocity / Redshift / cz : 		V(km/s) -3.2 [0.9] / z(~) -0.000011 [0.000003] / cz -3.20 [0.90]
   E 1953GCRV..C......0W
Syntax of parallax is : 'value quality [error] bibcode'
  • value : parallax value
  • quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality)
  • [error] : mean error
  • bibcode : bibcode of the parallax reference
Parallaxes (mas): 		2.64 [0.45] A 2007A&A...474..653V
Spectral type is made of 3 parts: %coding is composed of 4 parts :
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality→E=worst quality, {� } =unknown quality %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type: 		F8II C 1988MSS...C04....0H
Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z
  • (System) : may be AB (default is Vega)
  • flux-value : value of flux or magnitude
  • [error] : error value
  • quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality)
  • MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4])
  • bibcode : bibcode of the flux reference
Fluxes (8) :
U 7.31 [~] C 2002yCat.2237....0D
B 6.69 [~] C 2002yCat.2237....0D
V 5.75 [~] C 2002yCat.2237....0D
I 4.810 [~] D 2006MNRAS.369..723N
G 8.2046 [0.1770] C 2018yCat.1345....0G
J 4.10 [~] C 2002yCat.2237....0D
H 3.69 [~] C 2002yCat.2237....0D
K 3.61 [~] C 2002yCat.2237....0D
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within radius arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR.
The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding.
Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (25) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

V* Y Sgr HIC 89968 PPM 234421 WEB 15367
BD-18 4926 HIP 89968 ROT 2588 YZ 108 7642
GC 25038 HR 6863 SAO 161376 AAVSO 1815-18
GCRV 10820 IRAS 18184-1853 SKY# 33487 Gaia DR2 4096107909387492992
GEN# +1.00168608 2MASS J18212299-1851360 TD1 22196
GSC 06273-00200 PLX 4210 TYC 6273-200-1
HD 168608 PLX 4210.00 uvby98 100168608

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References (26 between 2015 and 2020) (Total 265)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
Follow new references on this object
                Reference summaries :

                from: to:

                 or select by : (not exhaustive, explanation here)

Collections of Measurements


distance : 1    velocities : 11    ROT : 1    PM : 4    Fe_H : 8    PLX : 2    MK : 3    V* : 2   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

distance (1) 

 | distance Q unit|  err-        err+     | method |     reference     |
 -----------------------------------------------------------------------
 |    0.488   kpc |                       |Cep     |2011AJ....142...51L|

velocities (11) 

 |typ|    Value    R   m.e.   |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 -------------------------------------------------------------------------------------------------------
 |v  |   -3.14        4.52    |B (   7)|s , ,O   ,           |          |       |  |2018yCat.1345....0G|

rot (1) 

 |  Vsini  [  err   ] (mes)|Q|     reference     |
 -------------------------------------------------
 |  18     [        ] (   )|D|1970CoKwa.189....0U|

pm (4) 

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 |   -3.190[    0.367]|   -8.034[    0.280]|ICRS|2018yCat.1345....0G|

fe_h (8) 

 |Teff  log.g | Fe_H  c|CompStar |CatNo|     Reference     |
 -----------------------------------------------------------
 | 5600 1.00  | 0.05   |SUN      |     |1994ApJS...91..309L|

plx (2) 

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
 |   2.52    :   0.93       |1997A&A...323L..49P|

mk (3) 

 |ds/mss|           Spectral type            |     reference     |
 -----------------------------------------------------------------
 |  /   |F5p                                 |1993yCat.3135....0C|

v* (2) 

 |     vartyp     |    Vmax     p     Vmin    |   period   | epoch (JD)   |D/rt %|     reference     |
 -----------------------------------------------------------------------------------------------------
m|DCEP            |   5.42      V    6.12     |   5.773    |              |      |2009A&A...504..959K|
Observing logs


IUE : 2   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

iue (2) 

 |Homogenized Name:  ComplID   |PROG |CL|D CAM IMAGE A| FES  MD|Obs.da  Time |ExpTim|m|CEB|S|      Comments      |F|     reference     |
 ---------------------------------------------------------------------------------------------------------------------------------------
 |HD 168608       :            |CBINE|53|L SWP 30939 L|11436 FO|870508 222400|001500| |300|G|C=45,B=19           |*|1996IUEML.C......0I|

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : V* Y Sgr

Link by name to the catalogue in VizieR :

V* Y Sgr BD-18 4926 GSC 06273-00200 HD 168608 HIC 89968
HIP 89968 HR 6863 IRAS 18184-1853 2MASS J18212299-1851360 PLX 4210
PPM 234421 SAO 161376 TD1 22196 TYC 6273-200-1 uvby98 100168608
Gaia DR2 4096107909387492992

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Annotations :
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2019.12.07-14:43:25

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